FEATHER-LICE OF DUCKS, ETC. 



123 



Fig. 99. — Biting-louse of Fig. 100. — Biting-louse of ducks, etc. 



ducks, etc. Greatly enlarged. Greatly enlarged. Original. 



Original. 



abdomen, which in the latter, is broken up into little squarish 

 patches. (Fig. 99.) 



Lipexirus anseris Gurlt. 

 This species is also stated to occur upon the domesti- 

 cated goose. 



Lipeuriis jejunus Nitzsch . 

 This slender pale yellowish-white parasite, with a black 

 margin and four-sided bands upon the first eight segments, 

 and with dark legs, is also found upon our domestic and wild 

 goose. 



Ornithohius cygnl Denny. 

 This handsome feather-louse occurs in large numbers up- 

 on wild and domestic swans. It is a large species, measur- 

 ing about 4mm. in length, with a slender and flattened body. 



